I've had this exporting error since SEPTEMBER. I've had so much contact with customer service that I can probably dictate the script and "troubleshooting..." Anyway, in case it helps--

I changed my export settings to QuickBooks Desktop, which creates an IIF file I can open in Excel when I export. Then, I can manually enter new checks into QuickBooks Online for every pay check and tax payment, using the information from that file. It still takes SO MUCH TIME OMG HOW HAS INTUIT NOT FIXED THIS, but allows me to run payroll normally and make tax payments, at least.